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Rectangular connectors are among the most popular and most commonly used electrical connectors. They are versatile and able to connect a wide variety of devices and systems, ranging from simple coaxial connections to high-speed data connections. Edge type, mezzanine (board to board) and array connectors are three common types of rectangular connectors.

Edge Type Connectors

Edge type connectors are among the most common types of rectangular connectors. They are typically characterized by two parallel rows of evenly spaced, rectangular terminals. Edge type connectors are typically used to connect components to a motherboard or board-level connection. They are easy to configure, require no soldering, and are relatively small in size, making them well-suited to space-constrained applications. Edge type connectors are usually used in one of three ways: straight (“type A”), left angle (“type B”), or right angle (“type C”).

Mezzanine (Board to Board) Connectors

Mezzanine connectors, also known as board-to-board connectors, are commonly used to connect two printed circuit boards (PCBs) or other items of electronics together. These connectors are characterized by their high-density designs, allowing them to fit a large number of pins – typically 30-40% more than other types of connectors – into a small space. This makes them an ideal choice for high-speed data transfer applications and other tight-fitting, high-density, data-dependent applications. Common types of mezzanine connectors include stacked and staggered configurations.

Array Connectors

Array connectors are rectangular connectors that are characterized by their array of evenly spaced terminals. They are typically used to connect components to a motherboard or board-level connection and are most commonly found in high-density applications. Their small size is beneficial for space-restricted applications as they are able to fit a large number of terminals into a small space, making them an ideal choice for high-speed data transfer applications. Common types of array connectors include pin arrays, wave soldered array connectors, surface mount array connectors, and press fit array connectors.

Working Principles

Rectangular connectors typically consist of two components: an outer shell and an internal connector. The external shell protects the internal connector from dust and environmental damage, while the internal connector contains a series of terminals designed to make a secure electrical connection between two components. When the connector is inserted into the mating component, the terminals make contact with the respective mating contact. Electrical power and/or data is conducted across the contact points, allowing the two components to communicate with one another.

Conclusion

Rectangular connectors are popular and widely used electrical connectors that can be used to connect a variety of devices and systems. Edge type, mezzanine (board to board), and array connectors are three common types of rectangular connectors. They typically consist of two components – an outer shell and an internal connector – and their terminals allow for a secure electrical connection between two components. As such, they can be used for a variety of data and power connections.

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